<header class="am-g am-g-fixed blog-fixed blog-text-center blog-header">
    <div class="am-u-sm-8 am-u-sm-centered" >
        <img width="100%" src="{$index.header_photo}" alt="这是顶部的图片"/>
        <h1 class="am-hide-sm-only">{$index.header_text}</h1>
    </div>
</header>